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For the EU/EEA, influenza activity remained at or below inter-seasonal levels throughout the 2020−21 season, probably due to the impact of the various public health and social measures implemented to reduce transmission of SARS-CoV-2. Only 10 sentinel and 158 non-sentinel specimens tested positive for influenza during the 2020−21 season. Compared with previous seasons a slightly lower number of samples were tested in sentinel surveillance and a similar number in non-sentinel surveillance.

This is the ninth report for the 2020-2021 influenza season. As of week 28/2021, only 943 influenza detections across the WHO European Region had been reported to the European Surveillance System (TESSy); 51% type A viruses, with A(H3N2) and A(H1N1)pdm09 being approximately equally represented, and 49% type B viruses with only 16 having been ascribed to a lineage, 13 B/Victoria and three B/Yamagata.

This is the eighth report for the 2020-2021 influenza season. As at week 24/2021, only 934 influenza detections across the World Health Organization (WHO) European Region had been reported to TESSy.

This is the seventh report for the 2020−2021 influenza season. As of week 20/2021, only 909 influenza detections across the WHO European Region had been reported to TESSy.

ECDC’s influenza virus characterisation reports are published periodically and give an overview of circulating influenza viruses. They provide details on the current vaccine strains, summarise the development of the viruses since the last report, and closely follow the main developments for the ongoing influenza season. Virus characterisation reports are primarily intended for influenza virologists and epidemiologists.

This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 9-15 May 2021 and includes updates on COVID-19, dengue and influenza.

This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 18-24 April 2021and includes updates on COVID-19, influenza, measles, Ebola virus disease, chikungunya and dengue.

This is the fifth report for the 2020-2021 influenza season. As of week 12/2021, only 758 influenza detections across the WHO European Region had been reported to The European Surveillance System (TESSy); 50% type A viruses, with A(H3N2) and A(H1N1)pdm09 being equally represented, and 50% type B viruses, with only 12 having been ascribed to a lineage, 10 B/Victoria and two B/Yamagata.

The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 11-17 April 2021 and includes updates on COVID-19, influenza, and Ebola virus disease.